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30852780 = 2235773459
BaseRepresentation
bin111010110110…
…0011010101100
32011001111001120
41311230122230
530344242110
63021140540
7523146540
oct165543254
964044046
1030852780
1116463172
12a3ba750
1365131aa
144151a20
152a96870
hex1d6c6ac

30852780 has 48 divisors (see below), whose sum is σ = 98730240. Its totient is φ = 7051968.

The previous prime is 30852779. The next prime is 30852791. The reversal of 30852780 is 8725803.

30852780 is nontrivially palindromic in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36310 + ... + 37149.

It is an arithmetic number, because the mean of its divisors is an integer number (2056880).

Almost surely, 230852780 is an apocalyptic number.

30852780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30852780 is an abundant number, since it is smaller than the sum of its proper divisors (67877460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30852780 is a wasteful number, since it uses less digits than its factorization.

30852780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73478 (or 73476 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 30852780 is about 5554.5278827277. The cubic root of 30852780 is about 313.6399920147.

The spelling of 30852780 in words is "thirty million, eight hundred fifty-two thousand, seven hundred eighty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 420 73459 146918 220377 293836 367295 440754 514213 734590 881508 1028426 1101885 1469180 1542639 2056852 2203770 2571065 3085278 4407540 5142130 6170556 7713195 10284260 15426390 30852780